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Thread: Betsy - my first RGB projector

  1. #21
    Join Date
    Dec 2009
    Location
    Seattle, Wa
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    413

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    Fair point about the heat sink, thanks for the feedback guys. I think it would probably work OK like it is, but at the very least better heat transfer should extend the life of the blue module. I won't pretend to understand all the IR filtering stuff. Originally I intended the washers to be temporary, but I sort of forgot about them. It should easy enough to order a couple plates of the right thickness.

    Mike

  2. #22
    Join Date
    Aug 2007
    Location
    Under a rock in Cambridge UK
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    1,353

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    Looking good...

    But something you might want to keep your eye on is the dichro mounts... I notice the adjustment screws are wound a long way back (of course it might just be the angle of the photograph)

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    I found that after every show, my beams were out of convergence. Whether there was a 60k or 1k sound system providing the vibrations, everything was out of line. After a lot of troubleshooting, swearing and cursing I found that the springs on the Laserwave dichro mounts didn't have enough tension. I found by tapping the corner (the one without the adjuster) of the dichro mount with my finger it went out of bonk... So I now have to wind my dichros forward to stop them moving and just hope and pray that I don't have to disassemble the whole projector and drill new holes to get it back in line... Fingers crossed eh...

    Mark

  3. #23
    Join Date
    Dec 2009
    Location
    Seattle, Wa
    Posts
    413

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    Betsy is complete!!! The last piece to go in was in the aperture glass. DONE! I am so happy and can't thank the bright bulbs here on PL enough. I'm working on my variance paperwork now and then plan to get deeper into software side of things. In the meantime, here are some pics.


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    Mike

  4. #24
    Join Date
    Jul 2010
    Location
    Netherlands
    Posts
    3,316

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    Quote Originally Posted by Dr Laser View Post
    Betsy was the name of my first real girlfriend so it makes sense to name my first real projector after her.

    So in the beginning it will work fine and then slowly it will start drifting away and one day it will break.
    wow your harsh XD



    Nice projector blowfly

  5. #25
    Join Date
    Oct 2010
    Location
    Athens, Greece
    Posts
    1,930

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    marvellous!!!!!

    excellent job sir blowfly!!!
    "its called character briggs..."

  6. #26
    Join Date
    Aug 2008
    Location
    UK
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    5,704

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    Nice! Hidden Charactes

  7. #27
    Join Date
    Aug 2008
    Location
    Seattle
    Posts
    220

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    That's one of the nicest home brew projectors I've seen. Very well thought out and executed.

  8. #28
    Join Date
    Dec 2008
    Location
    veenwouden
    Posts
    2,580

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    Nice blowfly!!! I think your the one who needed two new alluminium bars because yours was dented during shipment. I still have two brand new ones sitting here so let me know if you where the one who needed them. Shoot me a pm

  9. #29
    Join Date
    Jan 2006
    Location
    Charleston, SC
    Posts
    2,147,489,459

    Thumbs up

    Looking good there, Mike! Will we be able to see that baby in person at SELEM 2011?

    Adam

  10. #30
    Join Date
    Dec 2009
    Location
    Seattle, Wa
    Posts
    413

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    Adam - yep, I'm online for SELEM! My wife is expecting me to go which is the highest bar to hurdle.

    Edison - I do need need one replacement bar. Will send you a PM.

    Thanks for the kind words everyone. Seeing the fruit of the master projector builder at SELEM like DZ gave me a high bar! My next one will be even better.

    Mike

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